CVE-2023-53851
drm/msm/dp: Drop aux devices together with DP controller
Description
In the Linux kernel, the following vulnerability has been resolved: drm/msm/dp: Drop aux devices together with DP controller Using devres to depopulate the aux bus made sure that upon a probe deferral the EDP panel device would be destroyed and recreated upon next attempt. But the struct device which the devres is tied to is the DPUs (drm_dev->dev), which may be happen after the DP controller is torn down. Indications of this can be seen in the commonly seen EDID-hexdump full of zeros in the log, or the occasional/rare KASAN fault where the panel's attempt to read the EDID information causes a use after free on DP resources. It's tempting to move the devres to the DP controller's struct device, but the resources used by the device(s) on the aux bus are explicitly torn down in the error path. The KASAN-reported use-after-free also remains, as the DP aux "module" explicitly frees its devres-allocated memory in this code path. As such, explicitly depopulate the aux bus in the error path, and in the component unbind path, to avoid these issues. Patchwork: https://patchwork.freedesktop.org/patch/542163/
INFO
Published Date :
Dec. 9, 2025, 4:17 p.m.
Last Modified :
Oct. 3, 2026, 11:17 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
Solution
- Depopulate aux bus in error path.
- Depopulate aux bus in component unbind path.
- Ensure DP controller is not torn down prematurely.
- Apply provided kernel patches.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2023-53851.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-53851 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2023-53851
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2023-53851 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-53851 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Oct. 03, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2023/53xxx/CVE-2023-53851.json">CVE-2023-53851</a> Added Reference https://git.kernel.org/stable/c/2fde37445807e6e6d7981402d0bf1be0e5d81291 Added Reference https://git.kernel.org/stable/c/a7bfb2ad2184a1fba78be35209b6019aa8cc8d4d Added Reference https://git.kernel.org/stable/c/e09ed06938807cb113cddd0708ed74bd8cdaff33 Added Reference https://git.kernel.org/stable/c/ff1338a3bfaa2f35b5f49a434f2ad6884b75fafe Removed Reference https://git.kernel.org/stable/c/2fde37445807e6e6d7981402d0bf1be0e5d81291 Removed Reference https://git.kernel.org/stable/c/a7bfb2ad2184a1fba78be35209b6019aa8cc8d4d Removed Reference https://git.kernel.org/stable/c/e09ed06938807cb113cddd0708ed74bd8cdaff33 -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 04, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '2b57f726611e294dc4297dd48eb8c98ef1938e82', 'lessThan': 'e09ed06938807cb113cddd0708ed74bd8cdaff33', 'versionType': 'git'}, {'status': 'affected', 'version': '2b57f726611e294dc4297dd48eb8c98ef1938e82', 'lessThan': '2fde37445807e6e6d7981402d0bf1be0e5d81291', 'versionType': 'git'}, {'status': 'affected', 'version': '2b57f726611e294dc4297dd48eb8c98ef1938e82', 'lessThan': 'a7bfb2ad2184a1fba78be35209b6019aa8cc8d4d', 'versionType': 'git'}, {'status': 'affected', 'version': '8768663188e4169333f66583e4d2432e65c421df', 'versionType': 'git'}, {'status': 'affected', 'version': '6.0.7', 'lessThan': '6.1', 'versionType': 'semver'}], 'programFiles': ['drivers/gpu/drm/msm/dp/dp_display.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.1'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.1', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.3.13', 'versionType': 'semver', 'lessThanOrEqual': '6.3.*'}, {'status': 'unaffected', 'version': '6.4.4', 'versionType': 'semver', 'lessThanOrEqual': '6.4.*'}, {'status': 'unaffected', 'version': '6.5', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['drivers/gpu/drm/msm/dp/dp_display.c'], 'defaultStatus': 'affected'}] -
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 09, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: drm/msm/dp: Drop aux devices together with DP controller Using devres to depopulate the aux bus made sure that upon a probe deferral the EDP panel device would be destroyed and recreated upon next attempt. But the struct device which the devres is tied to is the DPUs (drm_dev->dev), which may be happen after the DP controller is torn down. Indications of this can be seen in the commonly seen EDID-hexdump full of zeros in the log, or the occasional/rare KASAN fault where the panel's attempt to read the EDID information causes a use after free on DP resources. It's tempting to move the devres to the DP controller's struct device, but the resources used by the device(s) on the aux bus are explicitly torn down in the error path. The KASAN-reported use-after-free also remains, as the DP aux "module" explicitly frees its devres-allocated memory in this code path. As such, explicitly depopulate the aux bus in the error path, and in the component unbind path, to avoid these issues. Patchwork: https://patchwork.freedesktop.org/patch/542163/ Added Reference https://git.kernel.org/stable/c/2fde37445807e6e6d7981402d0bf1be0e5d81291 Added Reference https://git.kernel.org/stable/c/a7bfb2ad2184a1fba78be35209b6019aa8cc8d4d Added Reference https://git.kernel.org/stable/c/e09ed06938807cb113cddd0708ed74bd8cdaff33